Hydraulic brake for draw works, drums, and hoists



Nov. 24, 1931. ST. CLAIR F. LUZZI 1 HYDRAULIC BRAKE FOR DRAW WORKS, DRUMS, AND HOISTS Filed March 29, 1930 2 Sheets$heet l $1". CLAIR F. LUZZI 1,333,167

HYDRAULIC BRAKE FOR DRAW WORKS, DRUMS, AND HOISTS v 3 S CLAIR F. LUZZI w, wnfiwwe Quito W1 5 Patented Nov. 24, 1931 Qs'r; CLAIR FBANQISQLUZZIQOF nous'rom-mxzas; QSSIGNOR 'GE-DNE HA'IZF Tofu:

THRAIILKILL, or

'- 1} nymmomc mmxm rommmw worms-taunts, HQZLVSY'ESI 1 .mpfilicatidmafiled iclii .iaeoifsrig mummies,

' T e in'xrentiomreletes to; an impmement in hydraulic brake 'controlgmec hani'sm. I

t It is one oi the objects of. theinventlonvto provide an improvementiucbmiectiml with the, manipulation of brakes-arid panticularly oi the .typ e. of v brake usediu connectionjwith; the hoistipg mechanism on wellrigs Another ob'ect of theiinvilfiion i'sytorpro,

viclehydraulic; control; 01; the, b ge kegha-ndl;

- ofa vwell rig draw works A e11,. further; object ovitheifiverrtionfis w. o ide a o trol mech n sm q ake an in which hydraulic pnes sul ge may bewusedItQ move a; cross, heact attached" tcith e-1b;elite/Q provide, a dual. hydrarulietcontnol for bra'l ie bands, in which. the hrake bandmary belockei in any desired" positionby F'tvrQ'PBiIf g ,a. quark;

tity of fluid in the 'iepntret m e'eb a-n ism,

A still further object of; thefil wentionjs toiprovidegimconnectionwith e hydreulgicntrol: ion brake bands, m n al co r l which may beused inevent; ofiiailure joithe g fhyjd-raulic controlsv tionv with the; whereinfs;

contr0l1.-mechanism. as applied band of a draw Works.

Fig; zine-top plamview e i Hemqch Efi shown in m 1. with i li hyd iflll fifil mfi 1 r 1 ith the;-c,re$shead 201. bypassing -tllerethru der. shown 111. sectlom.

. Fig; 3 isa: siderelevation lwith eeuteifi shown in 660131011 0513 thefclual' centrol mecharnism. j which may be used :in r practlcmg the r invention- '9? r l 5' In;Eig.-11,a well. derrick isyillustrarted gem erally' at, 2,-which; derriek includes; a floor or other construction 3.; Mountediuon the derrick; "or other supporting; ;,st1;.ucture; is a; draw works. 4 which includes! as, a; pant there;- of thebrake drum-15?; About thisodrum iisnt-he' brake,- bandpfi, thecontrokot whichconstig tutes. the essential fiea-turer of this" iniventiona vapplying mbrakei band toe brake drum if, i nsnalato anchor onelend ifv heauddlh Other and furthen LQbj ects'ot; the. in-ueI, i;-Q tion will -be; readily apparent when the foL- lowing description is: considered connec g mp yin raw n a o Y nection 7" has. been; provided: and the banglfisf illustrated as;having beenilooped ebolitft his adjustable with, respect; thereto means of cormectiouasat 8. The. con neetibu 7 isar- I ranged, tor attachment; to a support .9 and is} the 111112 Thus is desired}toflchange the ad lustmentso fthe brakeybend; slightly it] 'nutJILsQtheiLtBeQengtB ay beldrwndow n:

additional thickness of the bland.

anctmax loser-provided with an opening 15. so

beeccomplisfied bx mouement of, the

, .v r 6Q w r lyi thus-th r e' d em i tlr drewx r about the brfake ;dnum,, or in: event a, new lrnmgaispepgliedte the'brake bend, the} member ,7-"may:be .raisedLto; accommodate; the: 1

The opp osite end -12, ,otthe, brake band-6 afiterr.pass ng upouthe drum is connected; to as' cross, red l3, This rod; gisierranged for v sllding movement upon the-guide members 14L;

rthet'thej' be fittedioutjo thei bars 'Ehe-bars, 14 are; shown as having one end sertedaing thesupport 9- i11f1a recess 16 formed} flatten ed,- at 17 and connected tofthe floor or of; thfebars: 14; are bestseerrin Fig. 2 so that the cross rod l31wi1-L ube pnoperly p osi-tioneda. d w d sp s at l wit stand then rmeu t r t neq i s ryi -inJ-the, oee onf;

oi the-brake;band.; r

I Theicrossro,

'liecte-d thereteswith the ropls 21, l These rods are: adjustable as; to length and. are connected,

and being positioned:- with respect to, the

head @58 therein, Ehe opposite end l gofi the bar-s, iariez V oth r uem tby efa t n me 1 8- u w l3 s r eng i b mei i j l fbiywmea ns; oifa crossnhead 20 -by being kcon crossheed by. the nuts '22.; QOHIIQCJCQQ to the crossv;;hefac;1,2,0 isiavpijston; rod-.23 "wh ich is. erg;

the-cross head; 20, Leading; into} .the,. cy li;r 1gd er E 25 is, as fluid pressure line; 29t whichi is: c0115 nected. toa, suitable; source of supply and control so that pressure jp'er mitted in the cylinder 25 toact against the fluid through the line 29 is best seen'in Fig. 3, the jlefthand side of this figure showing sa piston 24 and move the cross head 20 to the fright as viewed in Fig. 2.

This lateral movement of the cross head 20 is accompanied by an equivalent movement of the cross rod'13 which serves: tof'tighten the brake band 6 about the drum." *Wheni the" fluid pressure is released inside of the cylinden-:2 t s ms ppe e t a -th -Ie s 9n I the band will be released and the brakedrum in this manner freed for rotation.

The mechanism for controllingvthe flowiof device for manually applying the pressure to the fluid; pump 3Q has been. shown which is of a 'reciprocatin'gztype"and draws. its supplyof fluid from a tank 31; A check valve 32 is placedin theline to prevent areversalof the flow of fluid. The discharge from this pump passesthrough the line 33; and the'eontrol valve 35' into'the line 29. It-

isiintended that'this controlovalve 35 will be vof such construction'that a flow may pass therethru into the line 29 orj'theva'lve maybe 1 soadjusted that'discharge from'the. line 29:

mayoccur-through the pipe 36 so" that the fluid pressure in the cylinder 25may be re-' lieved-by turning the valve35, and'of'such further.constru'ction'that it may be moved t o entirely close the'pipe 29. 'If desired, this 43thereof may 'be' moved so that a flow of fluid may pass'intof'the line 4l frorn the pipe- 44, or may be discharged therefrom thmugh= the line 45. The fluid passing' 'through the" 1 11119344 or f-may be steam or compressed air which willtend' to raise the piston '39 and discharge from 5 the cylinder anyliquid which "may" be therein above 'the pistom 39."

This liquid will flow. into the'cyjlinderg25 and cause movement of the "piston 24, the "rod 23,. the'c'rosshead 20 andxin this manner causeti'ghteningo'ffthe brake band. The-lines 44 and 45 may' beconnec'ted to any"-sui-table' source'of fluid pressuresuch-"as'a boiler or compressor. The supplyof fluidto replenish the cylinder 38 flowsfrom or is drawn imm' the reserve tank 31.

Figs. 1 and 2"show an emergency ormanual control for the cross head 20 which may be utilized when 'suificienfpressure is; not available in the line '29 or' whenfadditional pres sure is desired to be applied to the cross head 20. This mechanism includes the supporting brakes 50 which serve as bearings for the rock shaft 51. This shaft has connected thereto the arms 52 which are,in turn, connected with the rods 53 which extend laterally and pass through the cross head 20. These rods 53. howeverf are' arranged "for sliding movement in thecross head 20 due to thefactthat --the passages 54 in the cross head are of greater diameter than the rods. A nut 55, however,

is placed up'on each 'of"the rods and ad usted so that itwill abut or be in a position closely adj acent'; to; the cr0sshead-2Qwhen it is in an inoperative'position. The rods 53 are of suflici'ent length to extend a substantial dis- 7 tancebeyond the cross head 20 so that. when the cr'o'ss headismovedby hydraulic pressure it will slidealong-the rods 53 How-' everg'if it is 'desired'to' move the cross h ead 20 by the manual brakerit isonly necessary to "v rock the shaft 5l by'm'eansof the lever- 57 so that thero'ds 53 are'm'oved to the'right'as w viewed in Fig.2[ The nuts thus cause movement of'the cros's headin a manner simi' lar to its'rmovementcaused by the piston rod 23. This construction enables the operator to" have a'ma'nual control-for the brake as well 7 as the hydraulic control and in event an in creased force" is; needed; on' the brake band,

the hydraulio'pressure maybe supplementedfbythemanual operation. V M

It i's intended, in the further development of'the invention, that various" alterations and-l f forth inthe'appendedclaims; f

: "What'Iclaim is:

modifications maybe made without depart-f ingfrom the spirit of the invention as's t '1. control mechanismjfor brakes --includ I ing a'cylinden-a pistorithere'i'n; means to-sup} ply-pressure fluid to said cylinder tomove said piston, a cross head connected 'to s'ai'd piston,-',a brake'band','a-cross rod connected to o'ne endof said ba'nd,a: support for said cylinde'r, a pairof guide bars-for said cross' rod anchored at one endand connected to sa'id sup port at the other end, and rods connecting said cross head and said cross rodwhereby I fluid in said cylinder. 7

Y 2;, control "for pressure operated bralies havinga-brake bandincluding'means to an; chor one end of the brake band, movable means connected 'to" the-fother} end of i-said band, guidebars forsaid means,a cross head connected tosaid means andihydraulic sure means to move saidcross head. -i .z

pres-' V said'band'may be contracted'bythe pressure: I

" 3; vA control for pressure 1 operated brakes 3 having" a brake band including-means to anj-rc'hor one-end of the brake band; movable means'c'onnectedtothe other end of said band,

guide bars for said eans'a cross head connected to said means, hydraullc pressure means to move said cross head andmeans to supply pressure fluid'tosaidpressure means. i

4. In combination with a brake band,=a'hydraulic 'co'ntrol means therefor. including a' 7 cross head,'amanual control also connected to cross head, a manual control also connected to said cross head, the connection for said manual control including rods slidable with respect to said cross head when said manual I control is inoperative, and means to adjust the position of said manual control rods with a respect to said cross head. v 7 ST. CLAIR FRANCIS LUZZI. 

